All Japan efforts on fundamental materials technology developments for HTS applications: Focusing on R&D of coated conductors
✍ Scribed by Yoshitaka Tokunaga; Teruo Izumi; Yuh Shiohara
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 203 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
✦ Synopsis
The coated conductors using REBa 2 Cu 3 O 7Àd (RE ¼ rare earth element, Y, Nd, Sm etc.) materials are expected for a lot of electric power applications, since it has a high critical current density at the liquid nitrogen temperature even under high magnetic fields. However, it has been difficult to obtain a bi-axially textured coated conductor, which is necessary to realize its high performance, and there has not been a tape fabricated longer than 1 m. Several different processes have been investigated for realizing the biaxially textured buffer layers/metal substrates as well as thicker film deposition processes and non-vacuum processes for a superconducting layer. Recently, a 10 m long YBa 2 Cu 3 O 7Àd tape with high J c was successfully fabricated. This paper reviews the recent progress of the research and development for the coated conductor with its prospects in Japan.